If luminous efficiency is described as how bright a light is when perceived by a human, then is there a radiometric equivalent to this measure? My guess is that luminous efficiency is a photometric quantity due to the fact that it measures some quantity relative to a HUMAN'S perception.
myxamediyar
It's really interesting that the shape of the graph remains the same. For some reason, I thought for dark adapted eye the distribution would have a higher variance, but it simply shifts to the right.
sparky-ed
I find it interesting to see how this function elucidates the varying sensitivities of the human eye to different wavelengths of light. The graph here is especially intriguing as it compares the visual responses of the human eye under low light and normal daylight conditions. For example, we can calculate how much the eye can perceive with a certain wavelength of light and how dark it is.
If luminous efficiency is described as how bright a light is when perceived by a human, then is there a radiometric equivalent to this measure? My guess is that luminous efficiency is a photometric quantity due to the fact that it measures some quantity relative to a HUMAN'S perception.
It's really interesting that the shape of the graph remains the same. For some reason, I thought for dark adapted eye the distribution would have a higher variance, but it simply shifts to the right.
I find it interesting to see how this function elucidates the varying sensitivities of the human eye to different wavelengths of light. The graph here is especially intriguing as it compares the visual responses of the human eye under low light and normal daylight conditions. For example, we can calculate how much the eye can perceive with a certain wavelength of light and how dark it is.